Supramolecular Third-order Nonlinear Optical Switches based on the Photo-Controllable Assemblies of Phthalocyanines
It is well known that the third-order nonlinear optical (3rd NLO) properties of phthalocyanines (Pcs) depend not only on the chemical structure of component monomers, but also on their packing arrangement, which provides the possibility to incorporate switchablity into the 3rd NLO behavior of such materials at supramolecular level. Herein, we rationally designed three kinds of novel photochromic moiety containing Pcs. By utilizing the photo-induced changes in the geometry and electronic delocalization distributions of photochromic moieties under the alternative illumination of suitable UV and visible light, the self-assemblies of Pcs were successfully photo-controlled in an efficient manner. As a consequence, a series of supramolecular 3rd NLO switching materials was obtained. All these materials showed very apparent difference in molecular second hyperpolarizabilities between “on and “offstates. Besides, they also showed large molecular second hyperpolarizabilities at the order of 10-30 esu both in “on and “off states. All the results suggest that these materials are potential in emerging optoelectronics and photonic technologies.
Z. H. Chen F. S. Zhang
The Key Lab of Organic Photoelectrons&Molecular Engineering of Ministry ofEducation, Department of C The Key Lab of Organic Photoelectrons&Molecular Engineering of Ministry of Education, Department of
国际会议
The 31st International Congress on Imaging Science(第31届国际影像科学大会 ICIS2010)
北京
英文
341-344
2010-05-12（万方平台首次上网日期，不代表论文的发表时间）